A Simplified Method for Calculation of Strain Dependence of Internal Friction in Transverse Vibrations
A Simplified Method for Calculation of Strain Dependence of Internal Friction in Transverse Vibrations
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横向振动中内摩擦应变依赖性的简化计算方法
DOI：
10.1143/jjap.8.539
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发表时间：
1969
影响因子：
1.5
通讯作者：
S. Asano
中科院分区：
文献类型：
--
作者：
S. Asano
本文分析了自由-自由横向振动高次模的阻尼现象，定量地讨论了振动应变分布对表观内摩擦的影响。在不同的振动模式下，观测到的内摩擦力与最大应变幅值或最大位移幅值的函数关系是不同的。本文提出了一种以平均应变幅为实验变量的简化方法，用于求出内摩擦力的真应变幅依赖性。建议内摩擦的振幅依赖部分可以依赖于振动的频率。
Damping phenomena in higher modes of free-free transverse vibration are analysed and tire effects of the distribution of the vibrational strain on the apparent internal friction are treated quantitatively. The functional relation of the observed internal friction with the maximum strain amplitude or the maximum displacement amplitude is different when different mode of vibration is used. A simplified method for finding the true strain amplitude dependence of the internal friction is presented where the average strain amplitude is used as an experimental variable. It is suggested that the amplitude-dependent part of the internal friction can be dependent on the frequency of the vibration.